1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <algorithm>
#include <initializer_list>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include <boost/optional.hpp>
#include "common/common_types.h"
#include "common/file_util.h"
namespace Kernel {
struct AddressMapping;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
// Loader namespace
namespace Loader {
/// File types supported by CTR
enum class FileType {
Error,
Unknown,
CCI,
CXI,
CIA,
ELF,
THREEDSX, // 3DSX
NSO,
NRO,
};
/**
* Identifies the type of a bootable file based on the magic value in its header.
* @param file open file
* @return FileType of file
*/
FileType IdentifyFile(FileUtil::IOFile& file);
/**
* Identifies the type of a bootable file based on the magic value in its header.
* @param file_name path to file
* @return FileType of file. Note: this will return FileType::Unknown if it is unable to determine
* a filetype, and will never return FileType::Error.
*/
FileType IdentifyFile(const std::string& file_name);
/**
* Guess the type of a bootable file from its extension
* @param extension String extension of bootable file
* @return FileType of file. Note: this will return FileType::Unknown if it is unable to determine
* a filetype, and will never return FileType::Error.
*/
FileType GuessFromExtension(const std::string& extension);
/**
* Convert a FileType into a string which can be displayed to the user.
*/
const char* GetFileTypeString(FileType type);
/// Return type for functions in Loader namespace
enum class ResultStatus {
Success,
Error,
ErrorInvalidFormat,
ErrorNotImplemented,
ErrorNotLoaded,
ErrorNotUsed,
ErrorAlreadyLoaded,
ErrorMemoryAllocationFailed,
ErrorEncrypted,
};
constexpr u32 MakeMagic(char a, char b, char c, char d) {
return a | b << 8 | c << 16 | d << 24;
}
/// Interface for loading an application
class AppLoader : NonCopyable {
public:
AppLoader(FileUtil::IOFile&& file) : file(std::move(file)) {}
virtual ~AppLoader() {}
/**
* Returns the type of this file
* @return FileType corresponding to the loaded file
*/
virtual FileType GetFileType() = 0;
/**
* Load the application
* @return ResultStatus result of function
*/
virtual ResultStatus Load() = 0;
/**
* Loads the system mode that this application needs.
* This function defaults to 2 (96MB allocated to the application) if it can't read the
* information.
* @returns A pair with the optional system mode, and and the status.
*/
virtual std::pair<boost::optional<u32>, ResultStatus> LoadKernelSystemMode() {
// 96MB allocated to the application.
return std::make_pair(2, ResultStatus::Success);
}
/**
* Get the code (typically .code section) of the application
* @param buffer Reference to buffer to store data
* @return ResultStatus result of function
*/
virtual ResultStatus ReadCode(std::vector<u8>& buffer) {
return ResultStatus::ErrorNotImplemented;
}
/**
* Get the icon (typically icon section) of the application
* @param buffer Reference to buffer to store data
* @return ResultStatus result of function
*/
virtual ResultStatus ReadIcon(std::vector<u8>& buffer) {
return ResultStatus::ErrorNotImplemented;
}
/**
* Get the banner (typically banner section) of the application
* @param buffer Reference to buffer to store data
* @return ResultStatus result of function
*/
virtual ResultStatus ReadBanner(std::vector<u8>& buffer) {
return ResultStatus::ErrorNotImplemented;
}
/**
* Get the logo (typically logo section) of the application
* @param buffer Reference to buffer to store data
* @return ResultStatus result of function
*/
virtual ResultStatus ReadLogo(std::vector<u8>& buffer) {
return ResultStatus::ErrorNotImplemented;
}
/**
* Get the program id of the application
* @param out_program_id Reference to store program id into
* @return ResultStatus result of function
*/
virtual ResultStatus ReadProgramId(u64& out_program_id) {
return ResultStatus::ErrorNotImplemented;
}
/**
* Get the RomFS of the application
* Since the RomFS can be huge, we return a file reference instead of copying to a buffer
* @param romfs_file The file containing the RomFS
* @param offset The offset the romfs begins on
* @param size The size of the romfs
* @return ResultStatus result of function
*/
virtual ResultStatus ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
u64& size) {
return ResultStatus::ErrorNotImplemented;
}
protected:
FileUtil::IOFile file;
bool is_loaded = false;
};
/**
* Common address mappings found in most games, used for binary formats that don't have this
* information.
*/
extern const std::initializer_list<Kernel::AddressMapping> default_address_mappings;
/**
* Identifies a bootable file and return a suitable loader
* @param filename String filename of bootable file
* @return best loader for this file
*/
std::unique_ptr<AppLoader> GetLoader(const std::string& filename);
} // namespace
|
